CN106872372A - A kind of constant-temperature integrating sphere device for gas analysis - Google Patents
A kind of constant-temperature integrating sphere device for gas analysis Download PDFInfo
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- CN106872372A CN106872372A CN201710161264.9A CN201710161264A CN106872372A CN 106872372 A CN106872372 A CN 106872372A CN 201710161264 A CN201710161264 A CN 201710161264A CN 106872372 A CN106872372 A CN 106872372A
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- 238000004868 gas analysis Methods 0.000 title claims abstract description 19
- 210000001747 pupil Anatomy 0.000 claims abstract description 37
- 238000009413 insulation Methods 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 16
- 230000006698 induction Effects 0.000 claims description 9
- 238000012360 testing method Methods 0.000 abstract description 11
- 238000004566 IR spectroscopy Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000002309 gasification Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
- G01N2021/3536—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis using modulation of pressure or density
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/02—Mechanical
- G01N2201/023—Controlling conditions in casing
- G01N2201/0231—Thermostating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/065—Integrating spheres
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of constant-temperature integrating sphere device for gas analysis, including integrating sphere body, integrating sphere body is provided with gas outlet, air intake, entrance pupil and exit pupil, the integrating sphere body outer surface is enclosed with Electric radiant Heating Film, and be embedded in adiabatic isolation shell, integrating sphere body is isolated vacuum insulation clearance layer is provided between shell with thermal insulation, the adiabatic isolation shell is provided with air inlet valve and air outlet valve, and the gas outlet, air intake, entrance pupil and exit pupil pass adiabatic isolation shell outer surface.The present invention can be used in measuring the infrared absorption spectroscopy of gas, and can reduce influence of the test environment to testing result.
Description
Technical field
The present invention relates to spectral instrument field, particularly a kind of constant-temperature integrating sphere device for gas analysis.
Background technology
Spectral analysis technique, is widely used to the chemical composition and relative amount of measurement of species at present.This technology tool
Have it is simple to operate, be quick on the draw, many-sided advantage such as data are accurate.However, current spectrum test sample instrument is mainly used for admittedly
Body sample analysis, and quality to light source, the pattern of sample and measuring environment dependence are larger.The temperature and humidity of environment with
And reflection, scattering, the polarization of light all can produce influence to measurement data, easily produce larger measurement error.Therefore, one is studied
Planting can be widely used in gas analysis and can reduce environment to detecting that the spectral instrument of influence is that pole is necessary.
The content of the invention
The invention provides a kind of constant-temperature integrating sphere device for gas analysis, can be used in measuring the infrared suction of gas
Spectrum is received, and influence of the test environment to testing result can be reduced.
A kind of constant-temperature integrating sphere device for gas analysis, including integrating sphere body, integrating sphere body are provided with outlet
Mouth, air intake, entrance pupil and exit pupil, the integrating sphere body outer surface are enclosed with Electric radiant Heating Film, and be embedded in it is adiabatic every
In shrinking away from theshell, integrating sphere body isolate vacuum insulation clearance layer is provided between shell with thermal insulation, it is described it is adiabatic isolate shell be provided with into
Air valve and air outlet valve, the gas outlet, air intake, entrance pupil and exit pupil pass adiabatic isolation shell outer surface.
Further, the integrating sphere body outer surface is uniformly wrapped up by Electric radiant Heating Film.
Further, the induction end of baroceptor in ball, air pressure sensing in the ball are provided with the integrating sphere body
Length of the induction end of device apart from air intake and gas outlet is both greater than integrating sphere body radius.
Further, temperature sensor, the temperature sensor and the Electric radiant Heating Film point are provided with the integrating sphere body
It is not connected with temperature controller.
Further, the gas outlet and the air intake point to the center of circle of integrating sphere body simultaneously, and gas outlet and enter
Gas port forms 180 degree angle with the line in the center of circle respectively.
Further, the entrance pupil points to the center of circle simultaneously with exit pupil, and entrance pupil is distinguished with exit pupil
With the line in the center of circle not on the same line.
Further, the gas outlet is arranged on the left end of integrating sphere body, and the air intake is arranged on integrating sphere body
Right-hand member.Further, the surface of the circular equatorial plane where the air outlet valve is located at gas outlet and air intake；It is described go out
The hemisphere homonymy that air valve and air inlet valve cut positioned at the circular equatorial plane where gas outlet and air intake.
Further, the induction end of gap baroceptor is provided with the vacuum insulation clearance layer.
Further, the entrance pupil is designed with adjustable aperture diaphragm with exit pupil；The air intake and gas outlet
It is designed with Gas flow-limiting valve.
The above-described constant-temperature integrating sphere device for gas analysis, with advantages below：
（1）As a result of integration spherical structure, signal intensity can be strengthened, improve signal to noise ratio, and make what gaseous sample in ball was subject to
Intensity of illumination is more uniform, reduces due to the influence that the change such as shape and angle of incident light is produced, and then measure gas
Infrared absorption spectroscopy is more accurate, substantially increases accuracy of instrument, stability and reliability；
（2）It is exhausted vacuum to be additionally provided with due to being provided with adiabatic isolation shell outside integrating sphere, between thermal insulation isolation shell and integrating sphere
Temperature gap layer, can effectively isolate extraneous test environment, reduce conduction of heat, so that sample temperature keeps permanent in ball
Temperature, reduces influence of the environment to testing result.
（3）Due to being provided with Electric radiant Heating Film in integration outer surface of ball, integrating sphere can uniformly be heated, and further exhausted
It is thermally isolated and air outlet valve and air inlet valve is provided with shell, integrating sphere can be lowered the temperature by importing refrigerant, realizes integrating sphere
Temperature can adjust, to meet gas with various required precision of the test to temperature, reduce gas detection to test environment according to
Lai Xing.
Brief description of the drawings
Fig. 1 is positive structure diagram of the invention.
Fig. 2 is the modular structure schematic diagram of temperature adjustment.
In figure, baroceptor 1 in ball, air outlet valve 2, temperature sensor 3, temperature controller 4, gas outlet 5, the exchange of three pin
Plug 6, exit pupil 7, Electric radiant Heating Film 8, gap baroceptor 9, entrance pupil 10, air intake 11, thermal insulation isolation shell 12 enters gas
Valve 13.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described, but protection scope of the present invention is not limited to following reality
Apply example.
As shown in figure 1, a kind of constant-temperature integrating sphere device for gas analysis, including integrating sphere body, integrating sphere body
Gas outlet 5, air intake 11, entrance pupil 10 and exit pupil 7 are provided with, integrating sphere body outer surface is enclosed with Electric radiant Heating Film 8, and
Integrating sphere body is embedded in adiabatic isolation shell 12, and integrating sphere body is isolated with thermal insulation vacuum insulation gap is provided between shell 12
Layer, thermal insulation isolation shell 12 is provided with air inlet valve 13 and air outlet valve 2, gas outlet 5, air intake 11, entrance pupil 10 and exit pupil 7
Pass adiabatic isolation shell 12 outer surface；Wherein, air outlet valve 2 can be connected with aspiration pump, when thermal insulation isolation shell 12 and integrating sphere sheet
When vacuum insulation clearance layer vacuum in body reduces, the vacuum of vacuum insulation clearance layer can be increased by being evacuated, strengthened
Integrating sphere thermal insulation；Air inlet valve 13 can be connected with refrigerant storage bottle, when integrating sphere this body temperature is too high, can be suitably added
A small amount of refrigerant, it is ensured that temperature control, makes the refrigerant after gasification be discharged from vacuum insulation clearance layer while opening air outlet valve 2.
Diffusing reflection coating is also included in integrating sphere body, is made of inertia high reflectance material, such as Gold plated Layer, prevent material with
Gaseous sample reacts；Thermal insulation isolation shell 12 is made up of heat-insulating material high, and surfaces externally and internally scribbles black light-absorbing coating, to increase
The thermal insulation of majorant for integral ball device.
To realize uniformly being heated in integrating sphere body, integrating sphere body outer surface is uniformly wrapped up by Electric radiant Heating Film 8, the present embodiment
Electric radiant Heating Film by conductive special ink, metal current-carrying bar be processed, hot pressing is made between insulation polyester film, to realize heat conduction
Uniformly, and then it is heated evenly integrating sphere.
It is the control intrinsic air pressure of integrating sphere, the induction end of baroceptor 1 in ball, institute is provided with integrating sphere body
The length both greater than integrating sphere body radius of the induction end apart from air intake 11 and gas outlet 5 of baroceptor 1 in ball is stated, to protect
Card obtains accurate barometric information, is not influenceed by gas and outlet airflow fluctuation is entered, and the display end of baroceptor 1 extends in ball
To outside adiabatic isolation shell 12, to facilitate the barometric information that baroceptor 1 is obtained in observation ball.
Further, it is that can accurately hold the intrinsic temperature of integrating sphere, temperature is provided with the integrating sphere body of the present embodiment
Degree sensor 3, with reference to shown in Fig. 2, temperature sensor 3 and Electric radiant Heating Film 8 are connected with temperature controller 4 respectively, by temperature control
The display screen of device 4 can observe the temperature data of the acquisition of temperature sensor 3, and by being input into preset temperature, temperature controller 4 can be with
According to temperature conditions, control flows through the size of current of Electric radiant Heating Film 8.When temperature sensor 3 feedback come temperature be close to or higher than it is pre-
If after temperature, temperature controller 4 can be gradually reduced the size of current for flowing through Electric radiant Heating Film 8.When the temperature ratio of the feedback of temperature sensor 3
When preset temperature is less than 10 degrees Celsius, temperature controller 4 can control to flow through the electric current of Electric radiant Heating Film 8, make it in specified peak power
Lower work.When observing that temperature is too high from display screen, air inlet valve 13 and the reduction temperature of air outlet valve 2 can be opened.
Further, in the present embodiment, gas outlet 5 points to the center of circle of integrating sphere body, gas outlet 5 with air intake 11 simultaneously
Be arranged on the left end of integrating sphere body, air intake 11 is arranged on the right-hand member of integrating sphere body, gas outlet 5 and air intake 11 respectively with
The line in the center of circle forms 180 degree angle, to form farthest transmission range.Entrance pupil 10 points to the center of circle simultaneously with exit pupil 7, and
Entrance pupil 10 and exit pupil 7 with the line in the center of circle not on the same line, pass through the luminous energy for entering integrating sphere body respectively
Inside coating multiple reflections are crossed, uniform illumination is formed on inwall.
Further, the surface of the circular equatorial plane where air outlet valve 2 is located at gas outlet 5 and air intake 11, points to
The center of circle and its line is perpendicular with the integrating sphere body equatorial plane, air outlet valve 2 and air inlet valve 13 are located at gas outlet 5 and the institute of air intake 11
The cutting of the circular equatorial plane hemisphere homonymy, to facilitate the refrigerant after gasification to be expelled directly out, it is to avoid the system after gasification
Cryogen has much impact to the air pressure of vacuum insulation clearance layer, is also prevented from that air pressure is excessive to be damaged to integrating sphere body.
Preferably to control the vacuum of vacuum insulation clearance layer, gap baroceptor is provided with vacuum insulation clearance layer
9 induction end, the display end of gap baroceptor 9 is extended to outside adiabatic isolation shell 12, to facilitate observation gap air pressure sensing
The barometric information that device 9 is obtained.
It is adjusting intensity of illumination, entrance pupil 10 is designed with adjustable aperture diaphragm with exit pupil 7；In addition, the present embodiment
Air intake 11 and gas outlet 5 are designed with Gas flow-limiting valve, convenient control sample gas turnover.
The course of work：First open air intake 11 and be filled with test gas to integrating sphere body, reach close after certain air pressure into
Gas port 11, source emissioning light is incided in integrating sphere body by entrance pupil 10, integrated ball inner body wall coating multiple reflections,
By the outgoing of exit pupil 7 after under test gas and integrating sphere inside coating material interact in incident light and integrating sphere, according to gas
Absorption peak strength of the body at characteristic absorpting spectrum, obtains the chemical composition and relative amount of gas.
Claims (10)
1. a kind of constant-temperature integrating sphere device for gas analysis, including integrating sphere body, integrating sphere body be provided with gas outlet,
Air intake, entrance pupil and exit pupil, it is characterised in that：The integrating sphere body outer surface is enclosed with Electric radiant Heating Film, and inlays
In thermal insulation isolation shell, integrating sphere body isolate vacuum insulation clearance layer is provided between shell with thermal insulation, described adiabatic to isolate shell
Air inlet valve and air outlet valve are provided with, the gas outlet, air intake, entrance pupil and exit pupil pass adiabatic isolation shell appearance
Face.
2. the constant-temperature integrating sphere device for gas analysis according to claim 1, it is characterised in that：The integrating sphere sheet
External surface is uniformly wrapped up by Electric radiant Heating Film.
3. the constant-temperature integrating sphere device for gas analysis according to claim 1, it is characterised in that：The integrating sphere sheet
The induction end of baroceptor in ball is provided with vivo, and the induction end of baroceptor is apart from air intake and gas outlet in the ball
Length is both greater than integrating sphere body radius.
4. the constant-temperature integrating sphere device for gas analysis according to claim 1, it is characterised in that：The integrating sphere sheet
Temperature sensor is provided with vivo, the temperature sensor and the Electric radiant Heating Film are connected with temperature controller respectively.
5. the constant-temperature integrating sphere device for gas analysis according to claim 1, it is characterised in that：The gas outlet with
The air intake points to the center of circle of integrating sphere body simultaneously, and gas outlet and air intake form 180 degree with the line in the center of circle respectively
Angle.
6. the constant-temperature integrating sphere device for gas analysis according to claim 5, it is characterised in that：The entrance pupil
The center of circle is pointed to exit pupil simultaneously, and entrance pupil and exit pupil are respectively with the line in the center of circle not on the same line.
7. the constant-temperature integrating sphere device for gas analysis according to claim 5, it is characterised in that：The gas outlet sets
The left end in integrating sphere body is put, the air intake is arranged on the right-hand member of integrating sphere body.
8. the constant-temperature integrating sphere device for gas analysis according to claim 7, it is characterised in that：The air outlet valve position
In the surface of the circular equatorial plane where gas outlet and air intake；The air outlet valve and air inlet valve are located at gas outlet and air intake
The hemisphere homonymy of the circular equatorial plane cutting at place.
9. the constant-temperature integrating sphere device for gas analysis according to claim 1, it is characterised in that：The vacuum insulation
The induction end of gap baroceptor is provided with clearance layer.
10. the constant-temperature integrating sphere device for gas analysis according to claim 1, it is characterised in that：The incident light
Hole is designed with adjustable aperture diaphragm with exit pupil；The air intake and gas outlet are designed with Gas flow-limiting valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710161264.9A CN106872372B (en) | 2017-03-17 | 2017-03-17 | Constant temperature integrating sphere device for gas analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710161264.9A CN106872372B (en) | 2017-03-17 | 2017-03-17 | Constant temperature integrating sphere device for gas analysis |
Publications (2)
| Publication Number | Publication Date |
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| CN106872372A true CN106872372A (en) | 2017-06-20 |
| CN106872372B CN106872372B (en) | 2023-11-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406428A (en) * | 2018-12-07 | 2019-03-01 | 浙江大学昆山创新中心 | A kind of gas-detecting device based on integrating sphere multiple reflections |
| CN110132888A (en) * | 2019-04-30 | 2019-08-16 | 深圳市太赫兹科技创新研究院有限公司 | A kind of optical integrating-sphere and gaseous sample tera-hertz spectra acquisition device |
| CN110132887A (en) * | 2019-04-30 | 2019-08-16 | 深圳市太赫兹科技创新研究院有限公司 | A kind of optical integrating-sphere and sample Terahertz transmitted spectrum acquisition device |
| CN110146465A (en) * | 2019-04-30 | 2019-08-20 | 深圳市太赫兹科技创新研究院有限公司 | A kind of optical integrating-sphere and sample Terahertz reflectance spectrum acquisition device |
| CN114609064A (en) * | 2022-03-09 | 2022-06-10 | 河海大学 | Gas detection device suitable for low-pressure environment |
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